Carbon dioxide (CO2) is compressed from initial temperature T₁ = 26 °C and pressure p₁ = 4 bar to final pressure p2 = 20 bar. The specific heat capacity can be obtained from tabulated values at the average temperature of the compression process. The process is polytropic, and the polytropic constant k = 1.25). Calculate: 1) Gas temperature after compression 72 2) Specific compression work w 3) Average specific heat capacity 4) Specific heat transferred in the process q 5) Change of specific entropy As K (with one decimal accuracy) kJ/kg (with one decimal accuracy) kJ/kgK (with four decimal accuracy) kJ/kg (with two decimal accuracy) kJ/kgK (with three decimal accuracy)

For the statements in them, put T if they are true and F if they are false. a) ( ) When a certain mass of ice melts at 0ºC, its density decreases. In this case, due to the first law of thermodynamics, the variation of the internal energy will be smaller than the heat involved in the process.b) ( ) During a process involving an ideal gas, you know the initial iternal energy and the final internal energy during the process. So you can know if the energy variation internal gas during the process is due to the work performed or the heat transferred.c) ( ) For a temperature increase of ∆T, a certain amount of ideal gas requires 30J when heated to constant volume and 50 J when heated to constant pressure. In thisIn this case, it is correct to state that the work performed by the gas in the second situation is 20 J.d) ( ) The higher the temperature of an ideal gas in a fixed volume V, the lower the free middle path of its molecules.e) ( ) When a system loses heat and performs work during a…

Air treated as an ideal gas and having a specific heat at constant volume Cv=1200 j/kg.K undergoes a process. During this process, heat is observed to exit the system with an amount of 10 kJ while work is provided to the system with an amount of 23 kJ. If the initial temperature of air was 20 C, what is the final temperature of air if the mass of air undergoing the process is 0.3 Kg. Select one: O a. 59.5 C O b. 48.73 C O c. 63.4 C O d. 56.1 C

3. Ten Ibm of an ideal gas is compressed in a piston-cylinder arrangement to 1/10 of its initial volume. The ideal gas has a molecular mass (M) of 25 and the ideal gas heat capacity is given by C, = 0.4 + 0.3 x 103 T-0.2 x 106 T² Btu/(lbm °R) where Tis in Rankine. If the initial state 1 is 5 psi and 80° F and the process is polytropic with n=1,3, what is the final (state 2) pressure in psi (8%), the final temperature in °R (8%), the work done in Btu (10%), and the internal energy change (rigorous integration of C. from Tj to T2 is required) (12%), and the heat transfer in Btu (2%) for the process? 人3 13. 1.3 3-R+V B20x (4) 20x0"- 1.3 = 399.1 Psi it

Q7) 10 kg of water in a piston cylinder arrangement exists as saturated liquid/vapor at 100 kPa, with a quality of 50%. It is now heated so the volume triples. The mass of the piston is such that a cylinder pressure of 200 kPa will float it. Find the final temperature and the heat transfer in the proces.. HO [829°C, 25961 kJ]

1-find the internal energy in KJ of 2 kg water contained in 1120 liter at P-1 bar & v= 0.56 m^3/kg.

A certain ideal gas Y has molecular weight of 25 g/mol and specific heat ratio of 3. Initially, Y has pressure of 200kPa and volume of 2m3. The volume was doubled during heat transfer. Find the heat transfer if it underwent a process described by  a. n=1 b. n=Cp/Cv c. n=2

1) One of the common devices used in Engineering is a nozzle to transfer fluids such as air. Assume a steady-state flow and air as an ideal gas with the following parameters: Inlet: Mass flow = 2.1 kg/s V1 = 0.72 m³/kg T1 = 600 K A = 240 cm? Outlet: V2 = 2.7 m³/kg A2 = 40 cm2 a) What is the air pressure at the outlet. b) What is the velocity of the airflow at the inlet. c) What is the velocity of air at the outlet.

AE ll ll A:£0 docs.google.com/forms When a stationary mass of gas was compressed without friction at constant pressure its initial state of 0.8 m3 and 0.105 MPa was found to change to final state of 0.40 m3 and 0.105 MPa. There was a transfer of 85 kJ of heat from the gas during the process.How much did the internal energy of the gas change ? * 1 Add File Derive the law pv^y = constant * 1 Add File Вack Next Never submit passwords through Google Forms. This form was created inside L Iniversity of Al-

A fluid is contained in a cylinder by a spring-loaded, frictionless piston so that the pressure in the fluid is linear function of the volume (p = a + bV). The internal energy of the fluid is given by the following equation U = 34 + 3.15 pVwhere U is in kJ, p in kPa and V in cubic metre. If the fluid changes from an initial state of 173 kPa, 0.03 m3to a final state of 400 kPa, 0.06 m3, with no work other than that done on the piston, find the direction and magnitude of the work and heat transfer.